Core Scientific, Inc. - Joint Schedule 13G/A discloses passive ownership by Citadel-related entities and Kenneth Griffin. The filing reports that Citadel Securities LLC may be deemed to beneficially own 9,357,746 shares (3.0%) and that Citadel Securities Group LP, Citadel Securities GP LLC, and Kenneth Griffin may each be deemed to beneficially own 12,792,480 shares (4.1%) based on 315,596,127 Shares outstanding as of March 23, 2026. The statement describes shared voting and dispositive power and notes certain shares issuable upon conversion of warrants.
Positive
None.
Negative
None.
Insights
Documents a passive, consolidated disclosure of Citadel-related holdings and shared power.
The filing lists beneficial ownership figures and percent of class for several Citadel entities and Mr. Kenneth Griffin, citing 315,596,127 Shares outstanding as of March 23, 2026. It specifies shared voting and shared dispositive power for the reported amounts.
Cash‑flow treatment is not stated; the filing is a passive ownership disclosure under Schedule 13G/A and does not describe transactions or plans to buy or sell.
Key Figures
Shares outstanding:315,596,127 sharesCitadel Securities LLC beneficial ownership:9,357,746 sharesCitadel Securities Group / Citadel GP / Kenneth Griffin beneficial ownership:12,792,480 shares+1 more
4 metrics
Shares outstanding315,596,127 sharesas of March 23, 2026 (includes 1,325 shares issuable on warrants)
Citadel Securities LLC beneficial ownership9,357,746 sharesconstitutes 3.0% of the class
Citadel Securities Group / Citadel GP / Kenneth Griffin beneficial ownership12,792,480 shareseach constitutes 4.1% of the class
Shares issuable upon conversion1,325 sharesincluded in outstanding count as issuable upon conversion of warrants
"Amount beneficially owned: 1. Citadel Securities LLC may be deemed to beneficially own 9,357,746 Shares."
Beneficially own means having the economic rights and risks of a security—such as the right to receive dividends, sell the shares, or profit from price changes—whether or not your name appears on the official share register. Think of it like renting a car: you use it and reap the benefits even if the title lists someone else. Investors care because beneficial ownership determines who truly controls value, must be disclosed under securities rules, and can signal potential influence or trading activity that affects a stock’s price.
shared dispositive powerregulatory
"Shared Dispositive Power 12,792,480.00"
Schedule 13G/Aregulatory
"This is being jointly filed by Citadel Securities GP LLC ... (the "Reporting Persons")"
A Schedule 13G/A is an amended public filing with the U.S. securities regulator that updates a previous Schedule 13G, disclosing when an individual or group holds a substantial (typically over 5%) stake in a company and is claiming a passive, non‑controlling intent. Investors monitor these updates because rising or falling holdings can signal changing confidence, potential future moves, or shifts in voting power — like watching a public ledger where large shareholders quietly adjust their positions.
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
UNDER THE SECURITIES EXCHANGE ACT OF 1934
(Amendment No. 1)
Core Scientific, Inc.
(Name of Issuer)
Common stock, par value $0.00001 per share (the "Shares")
(Title of Class of Securities)
21874A106
(CUSIP Number)
03/31/2026
(Date of Event Which Requires Filing of this Statement)
Check the appropriate box to designate the rule pursuant to which this Schedule is filed:
Rule 13d-1(b)
Rule 13d-1(c)
Rule 13d-1(d)
schemaVersion:
SCHEDULE 13G
CUSIP Number(s):
21874A106
1
Names of Reporting Persons
Citadel Securities GP LLC
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
DELAWARE
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
12,792,480.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
12,792,480.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
12,792,480.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
4.1 %
12
Type of Reporting Person (See Instructions)
HC, OO
Comment for Type of Reporting Person: The percentages reported in this Schedule 13G are based upon 315,596,127 Shares outstanding comprised of (i) 315,594,802 Shares outstanding as of March 23, 2026 (according to the issuer's definitive proxy statement as filed with the Securities and Exchange Commission on March 31, 2026), and (ii) 1,325 Shares issuable upon conversion of certain warrants held by affiliates of the reporting persons.
SCHEDULE 13G
CUSIP Number(s):
21874A106
1
Names of Reporting Persons
Citadel Securities LLC
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
DELAWARE
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
9,357,746.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
9,357,746.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
9,357,746.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
3.0 %
12
Type of Reporting Person (See Instructions)
BD, OO
SCHEDULE 13G
CUSIP Number(s):
21874A106
1
Names of Reporting Persons
Citadel Securities Group LP
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
DELAWARE
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
12,792,480.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
12,792,480.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
12,792,480.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
4.1 %
12
Type of Reporting Person (See Instructions)
HC, PN
SCHEDULE 13G
CUSIP Number(s):
21874A106
1
Names of Reporting Persons
Citadel Advisors LLC
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
DELAWARE
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
0.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
0.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
0.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
0.0 %
12
Type of Reporting Person (See Instructions)
IA, HC, OO
SCHEDULE 13G
CUSIP Number(s):
21874A106
1
Names of Reporting Persons
Citadel Advisors Holdings LP
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
DELAWARE
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
0.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
0.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
0.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
0.0 %
12
Type of Reporting Person (See Instructions)
HC, PN
SCHEDULE 13G
CUSIP Number(s):
21874A106
1
Names of Reporting Persons
Citadel GP LLC
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
DELAWARE
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
0.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
0.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
0.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
0.0 %
12
Type of Reporting Person (See Instructions)
HC, OO
SCHEDULE 13G
CUSIP Number(s):
21874A106
1
Names of Reporting Persons
Kenneth Griffin
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
UNITED STATES
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
12,792,480.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
12,792,480.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
12,792,480.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
4.1 %
12
Type of Reporting Person (See Instructions)
HC, IN
SCHEDULE 13G
Item 1.
(a)
Name of issuer:
Core Scientific, Inc.
(b)
Address of issuer's principal executive offices:
838 Walker Road, Suite 21-2105, Dover, DE, 19904
Item 2.
(a)
Name of person filing:
This Schedule 13G is being jointly filed by Citadel Securities GP LLC ("CSGP"), Citadel Securities LLC ("Citadel Securities"), Citadel Securities Group LP ("CALC4"), Citadel Advisors LLC ("Citadel Advisors"), Citadel Advisors Holdings LP ("CAH"), Citadel GP LLC ("CGP"), and Mr. Kenneth Griffin (collectively with CSGP, Citadel Securities, CALC4, Citadel Advisors, CAH, and CGP, the "Reporting Persons") with respect to the Shares of the above-named issuer owned by Citadel Securities, CRBU Holdings LLC, a Delaware limited liability company ("CRBH"), and Citadel Securities Principal Strategies LLC, a Delaware limited liability company ("CSP"). Such owned Shares may include other instruments exercisable for or convertible into Shares.
CALC4 is the non-member manager of Citadel Securities, CRBH and CSP. CSGP is the general partner of CALC4. CAH is the sole member of Citadel Advisors. CGP is the general partner of CAH. Mr. Griffin is the President and Chief Executive Officer of CGP, and owns a controlling interest in CGP and CSGP.
The filing of this statement shall not be construed as an admission that any of the Reporting Persons is the beneficial owner of any securities covered by the statement other than the securities actually owned by such person (if any).
(b)
Address or principal business office or, if none, residence:
The address of each of the Reporting Persons is 830 Brickell Plaza, Miami, Florida 33131.
(c)
Citizenship:
Each of CSGP, Citadel Securities, Citadel Advisors, and CGP is organized as a limited liability company under the laws of the State of Delaware. Each of CALC4 and CAH is organized as a limited partnership under the laws of the State of Delaware. Mr. Griffin is a U.S. citizen.
(d)
Title of class of securities:
Common stock, par value $0.00001 per share (the "Shares")
(e)
CUSIP No.:
21874A106
Item 3.
If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)
Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)
Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)
Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)
Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)
An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)
An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)
A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)
A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)
A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)
A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J),
please specify the type of institution:
(k)
Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.
Ownership
(a)
Amount beneficially owned:
1. Citadel Securities LLC may be deemed to beneficially own 9,357,746 Shares.
2. Each of Citadel Securities Group LP and Citadel Securities GP LLC may be deemed to beneficially own 12,792,480 Shares.
3. Each of Citadel Advisors LLC, Citadel Advisors Holdings LP and Citadel GP LLC may be deemed to beneficially own 0 Shares
4. Mr. Griffin may be deemed to beneficially own 12,792,480 Shares.
(b)
Percent of class:
1. The number of Shares that Citadel Securities LLC may be deemed to beneficially own constitutes 3.0% of the Shares outstanding.
2. The number of Shares that each of Citadel Securities Group LP and Citadel Securities GP LLC may be deemed to beneficially own constitutes 4.1% of the Shares outstanding.
3. The number of Shares that each of Citadel Advisors LLC, Citadel Advisors Holdings LP and Citadel GP LLC may be deemed to beneficially own constitutes 0.0% of the Shares outstanding.
4. The number of Shares that Mr. Griffin may be deemed to beneficially own constitutes 4.1% of the Shares outstanding.
(c)
Number of shares as to which the person has:
(i) Sole power to vote or to direct the vote:
1. Citadel Securities LLC: 0
2. Each of Citadel Securities Group LP and Citadel Securities GP LLC: 0
3. Each of Citadel Advisors LLC, Citadel Advisors Holdings LP and Citadel GP LLC: 0
4. Mr. Griffin: 0
(ii) Shared power to vote or to direct the vote:
1. Citadel Securities LLC: 9,357,746
2. Each of Citadel Securities Group LP and Citadel Securities GP LLC: 12,792,480
3. Each of Citadel Advisors LLC, Citadel Advisors Holdings LP and Citadel GP LLC: 0
4. Mr. Griffin: 12,792,480
(iii) Sole power to dispose or to direct the disposition of:
1. Citadel Securities LLC: 0
2. Each of Citadel Securities Group LP and Citadel Securities GP LLC: 0
3. Each of Citadel Advisors LLC, Citadel Advisors Holdings LP and Citadel GP LLC: 0
4. Mr. Griffin: 0
(iv) Shared power to dispose or to direct the disposition of:
1. Citadel Securities LLC: 9,357,746
2. Each of Citadel Securities Group LP and Citadel Securities GP LLC: 12,792,480
3. Each of Citadel Advisors LLC, Citadel Advisors Holdings LP and Citadel GP LLC: 0
4. Mr. Griffin: 12,792,480
Item 5.
Ownership of 5 Percent or Less of a Class.
Ownership of 5 percent or less of a class
Item 6.
Ownership of more than 5 Percent on Behalf of Another Person.
Not Applicable
Item 7.
Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
Not Applicable
Item 8.
Identification and Classification of Members of the Group.
Not Applicable
Item 9.
Notice of Dissolution of Group.
Not Applicable
Item 10.
Certifications:
By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.
SIGNATURE
After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.
Citadel Securities GP LLC
Signature:
/s/ Seth Levy
Name/Title:
Seth Levy, Authorized Signatory
Date:
05/15/2026
Citadel Securities LLC
Signature:
/s/ Seth Levy
Name/Title:
Seth Levy, Authorized Signatory
Date:
05/15/2026
Citadel Securities Group LP
Signature:
/s/ Seth Levy
Name/Title:
Seth Levy, Authorized Signatory
Date:
05/15/2026
Citadel Advisors LLC
Signature:
/s/ Seth Levy
Name/Title:
Seth Levy, Authorized Signatory
Date:
05/15/2026
Citadel Advisors Holdings LP
Signature:
/s/ Seth Levy
Name/Title:
Seth Levy, Authorized Signatory
Date:
05/15/2026
Citadel GP LLC
Signature:
/s/ Seth Levy
Name/Title:
Seth Levy, Authorized Signatory
Date:
05/15/2026
Kenneth Griffin
Signature:
/s/ Seth Levy
Name/Title:
Seth Levy, attorney-in-fact*
Date:
05/15/2026
Comments accompanying signature: * Seth Levy is signing on behalf of Kenneth Griffin as attorney-in-fact pursuant to a power of attorney previously filed with the Securities and Exchange Commission, and hereby incorporated by reference herein. The power of attorney was filed as an attachment to a filing by Citadel Advisors LLC on Schedule 13G for Allakos Inc. on October 13, 2023.
What stake does Citadel Securities LLC report in CORZ?
Citadel Securities LLC reports beneficial ownership of 9,357,746 shares, or 3.0% of the class. The filing shows shared voting and shared dispositive power for those shares and ties percentages to 315,596,127 shares outstanding as of March 23, 2026.
How many shares is Kenneth Griffin reported to beneficially own in CORZ?
Kenneth Griffin is reported as beneficially owning 12,792,480 shares, equal to 4.1% of the class. The filing attributes shared voting and shared dispositive power and cites shares outstanding of 315,596,127 as of March 23, 2026.
Do the Citadel-related filers report sole voting or dispositive power in CORZ?
No sole power is reported for the Citadel-related filers or Mr. Griffin; the filing shows shared voting and shared dispositive power. Specific entries list zero sole voting/dispositive power and positive shared power amounts for the reported holdings.
What outstanding share count does the filing use to calculate percentages for CORZ?
The filing uses 315,596,127 shares outstanding to calculate percentages. That total combines 315,594,802 shares outstanding as of March 23, 2026 and 1,325 shares issuable upon conversion of certain warrants held by affiliates of the reporting persons.
